Arenas officially joins Wizards
The Wizards signed Arenas to a six-year, $65 million deal on July 22. The Warriors had 15 days to match the offer because Arenas was a restricted free agent, but they couldn't because of salary cap constraints.
The Warriors have since signed Speedy Claxton to play point guard.
Arenas was selected as the NBA's Most Improved Player last season after averaging 18.3 points, 6.3 assists and 4.7 rebounds. The 21-year-old point guard was a second-round pick by Golden State in the 2001 draft.
This story is from ESPN.com's automated news wire. Wire index
MORE NBA HEADLINES
- Rose sits out practice, expected to play Wed.
- Final Team USA cut could come by Thursday
- Veteran NBA ref Bavetta retires after 39 years
- Ex-Bucks coach Drew added to Cavs' staff